<template>
  <el-dialog title="维护班级" :visible.sync="mainOpen" width="600px" append-to-body :close-on-click-modal="false">
    <div>
      <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
        <el-form-item label="" prop="schoolId">
        </el-form-item>
        <el-form-item label="" prop="name">
          <el-input v-model="queryParams.name" placeholder="请输入" clearable @keyup.enter.native="handleQuery"/>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
          <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
        </el-form-item>
      </el-form>

      <el-row :gutter="10" class="mb8">
        <el-col :span="1.5">
          <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd" v-hasPermi="['system:class:add']">新增
          </el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button type="info" plain icon="el-icon-sort" size="mini" @click="toggleExpandAll">展开/折叠
          </el-button>
        </el-col>
        <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
      </el-row>

      <el-table v-if="refreshTable" v-loading="loading" :data="classList" row-key="id" border :default-expand-all="isExpandAll" :tree-props="{children: 'children', hasChildren: 'hasChildren'}">
        <el-table-column label="名称" align="left" prop="name"/>
        <el-table-column label="操作" align="center" width="200px" class-name="small-padding fixed-width">
          <template slot-scope="scope">
            <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)" v-hasPermi="['system:class:edit']">修改
            </el-button>
            <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAdd(scope.row)" v-hasPermi="['system:class:add']">新增
            </el-button>
            <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)" v-hasPermi="['system:class:remove']">删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 添加或修改学校班级对话框 -->
      <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
        <el-form ref="form" :model="form" :rules="rules" label-width="80px" label-suffix="：">
          <el-form-item label="上级" prop="pid">
            <treeselect v-model="form.pid" :options="classOptions" :normalizer="normalizer" placeholder="请选择上级"/>
          </el-form-item>
          <el-form-item label="名称" prop="name">
            <el-input v-model="form.name" v-if="form.id" placeholder="请输入名称"/>
            <el-input v-model="form.name" v-else type="textarea" :rows="2" placeholder="请输入名称，多个请使用，隔开"/>
          </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </el-dialog>
    </div>
  </el-dialog>
</template>

<script>
import {listClass, getClass, delClass, addClass, updateClass} from "@/api/regulatory/school_class";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
  name: "SchoolClass",
  components: {Treeselect},
  data() {
    return {
      mainOpen: false,
      schoolId: null,
      // 遮罩层
      loading: true,
      // 显示搜索条件
      showSearch: true,
      // 学校班级表格数据
      classList: [],
      // 学校班级树选项
      classOptions: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 是否展开，默认全部展开
      isExpandAll: true,
      // 重新渲染表格状态
      refreshTable: true,
      // 查询参数
      queryParams: {
        pid: null,
        code: null,
        name: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        name: [{required: true, message: '请输入名称', trigger: 'blur'}],
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    openClass(schoolId) {
      this.mainOpen = true
      this.schoolId = schoolId
      this.getList();
    },
    /** 查询学校班级列表 */
    getList() {
      this.loading = true;
      this.queryParams.schoolId = this.schoolId
      listClass(this.queryParams).then(response => {
        this.classList = this.handleTree(response.data, "id", "pid");
        this.loading = false;
      });
    },
    /** 转换学校班级数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.id,
        label: node.name,
        children: node.children
      };
    },
    /** 查询学校班级下拉树结构 */
    getTreeselect() {
      listClass().then(response => {
        this.classOptions = [];
        const data = {id: 0, name: '顶级节点', children: []};
        data.children = this.handleTree(response.data, "id", "pid");
        this.classOptions.push(data);
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        schoolId: this.schoolId,
        pid: null,
        code: null,
        name: null,
        createTime: null,
        updateTime: null,
        delFlag: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    /** 新增按钮操作 */
    handleAdd(row) {
      this.reset();
      this.getTreeselect();
      if (row != null && row.id) {
        this.form.pid = row.id;
      } else {
        this.form.pid = 0;
      }
      this.open = true;
      this.title = "添加学校班级";
    },
    /** 展开/折叠操作 */
    toggleExpandAll() {
      this.refreshTable = false;
      this.isExpandAll = !this.isExpandAll;
      this.$nextTick(() => {
        this.refreshTable = true;
      });
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      this.getTreeselect();
      if (row != null) {
        this.form.pid = row.pid;
      }
      getClass(row.id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改学校班级";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateClass(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addClass(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      this.$modal.confirm('是否确认删除学校班级编号为"' + row.id + '"的数据项？').then(function () {
        return delClass(row.id);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {
      });
    }
  }
};
</script>
